🔋 EFEST SLIM K4 Smart Battery Charger – 4-Bay | 2A Fast Charging | Universal Compatibility | UK Stock

Charge Up with Confidence – Slim, Smart, and Super-Fast!
The EFEST SLIM K4 is a 4-bay smart battery charger built for performance and precision. With 2A fast charging, it supports a wide range of Li-ion/IMR/INR/ICR battery sizes. Whether you're a vape user, flashlight enthusiast, or electronics pro, this compact charger delivers safe and reliable charging with LED status indicators and independent bay control.

✅ Key Features:

• 🔋 4 Independent Charging Bays – Simultaneously charge up to 4 batteries

• ⚡ 2A Fast Charging – Rapid recharge for your high-drain batteries

• 🔌 Universal Compatibility – Supports 18650, 20700, 21700, 26650, and more

• 💡 Smart LED Indicators – Clearly shows charging progress per bay

• 🔐 Multiple Safety Protections – Overcharge, reverse polarity, and short-circuit protection

• 🧳 Slim & Compact Design – Ideal for home, travel, or on-the-go use

• 🇬🇧 UK Plug – Designed for UK users, no adapter needed

🔄 Compatible Battery Types:

• 10440 / 14500 / 16340 / 18350 / 18650 / 20700 / 21700 / 26650
  (For Li-ion/IMR/INR/ICR rechargeable batteries only)

📦 What’s Included:

• 1 × EFEST SLIM K4 Charger

• 1 × USB Power Cable

• 📘 User Manual

• 🎁 Retail Packaging

⚠️ Safety Tips:

• Use only with compatible Li-ion batteries

• Do not charge damaged or non-rechargeable batteries

• Follow user manual instructions for optimal performance

🚚 Fast & Free UK Dispatch:

• ✅ Same-day shipping available

• 📦 Tracked & insured delivery options

• 🇬🇧 UK warehouse – No customs or delays